Index: Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismResultView.cs
===================================================================
diff -u -red08434acc8f5619842f1c6cb0b7f9a56cf8dad0 -rf4c4fe2feedd73d2f45395017b77df2bb56d5c27
--- Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismResultView.cs	(.../PipingFailureMechanismResultView.cs)	(revision ed08434acc8f5619842f1c6cb0b7f9a56cf8dad0)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismResultView.cs	(.../PipingFailureMechanismResultView.cs)	(revision f4c4fe2feedd73d2f45395017b77df2bb56d5c27)
@@ -42,13 +42,23 @@
         private readonly RecursiveObserver<CalculationGroup, ICalculationInput> calculationInputObserver;
         private readonly RecursiveObserver<CalculationGroup, ICalculationOutput> calculationOutputObserver;
         private readonly RecursiveObserver<CalculationGroup, ICalculationBase> calculationGroupObserver;
-        private IAssessmentSection assessmentSection;
+        private readonly IAssessmentSection assessmentSection;
 
         /// <summary>
         /// Creates a new instance of <see cref="PipingFailureMechanismResultView"/>.
         /// </summary>
-        public PipingFailureMechanismResultView()
+        /// <param name="assessmentSection">The assessment section that the failure mechanism belongs to.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="assessmentSection"/>
+        /// is <c>null</c>.</exception>
+        public PipingFailureMechanismResultView(IAssessmentSection assessmentSection)
         {
+            if (assessmentSection == null)
+            {
+                throw new ArgumentNullException(nameof(assessmentSection));
+            }
+
+            this.assessmentSection = assessmentSection;
+
             DataGridViewControl.CellFormatting += ShowAssessmentLayerTwoAErrors;
             DataGridViewControl.CellFormatting += DisableIrrelevantFieldsFormatting;